Fix alignment issues in Kyber (#236)

* Add .vscode to gitignore

* Add alignment to arrays used in Kyber to address #235

Author: rugo

.gitignore

@@ -9,3 +9,4 @@ __pycache__/
 bin/
 bin-host/
 compile_commands.json
+.vscode

crypto_kem/kyber768/m4fspeed/ntt.c

@@ -14,7 +14,7 @@ const int16_t zetas[64] =
     3221, 3021, 996, 991, 958, 1869, 1522, 1628
 };
 
-const int16_t zetas_asm[128] = {
+const int16_t __attribute__((aligned (4))) zetas_asm[128] = {
     // 7 & 6 & 5 & 4 layers
     0, 2571, 2970, 1812, 1493, 1422, 287, 202, 3158, 622, 1577, 182, 962, 2127, 1855, 1468, 
     // 1st loop of 3 & 2 & 1 layers
@@ -35,7 +35,7 @@ const int16_t zetas_asm[128] = {
     3124, 448, 2264, 3221, 3021, 996, 991, 1758, 677, 2054, 958, 1869, 1522, 1628
 };
 
-const int16_t zetas_inv_CT_asm[256] = 
+const int16_t __attribute__((aligned (4))) zetas_inv_CT_asm[256] = 
 {
     // pad + LAYER 7+6+5+4
     0, 2285, 2285, 758, 2285, 1517, 758, 359, 2285, 3127, 1517, 1907, 758, 3042, 359, 1836,